<template>
  <div class="Roles-container">
    <!-- 面包屑区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>参数管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <el-alert
        title="注意：只允许为第三级分类设置相关参数"
        type="warning"
        :closable="false"
        show-icon
      >
      </el-alert>
      <!-- 选择商品分类区域 -->
      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类：</span>
          <!-- 选择商品分类的级联选择框 -->
          <el-cascader
            v-model="selectedcateKeys"
            :options="catelist"
            :props="cateProps"
            @change="handleChange"
          >
          </el-cascader>

        </el-col>

      </el-row>
      <!--  属性参数区域-->

      <el-tabs
        v-model="activeName"
        @tab-click="handleTabClick"
      >
        <el-tab-pane
          label="动态参数"
          name="many"
        >
          <el-button
            type="primary"
            :disabled="isBtnDisabled"
            @click="addDialogVisible = true"
          >添加参数</el-button>
          <!-- 动态参数表格 -->
          <el-table
            :data="manyTableData"
            border
          >
            <el-table-column type="expand">
              <template slot-scope="scope">

                <el-tag
                  closable
                  :disable-transitions="false"
                  v-for="(item ,index) in scope.row.attr_vals "
                  :key=index
                  @close="handleClose(index,scope.row)"
                >{{ item }}</el-tag>
                <!-- 动态编辑标签 -->
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                >+ New Tag</el-button>

              </template>
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column
              prop="attr_name"
              label="参数名称"
            >
            </el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  type="primary"
                  size="mini"
                  icon="el-icon-edit"
                  @click="showEditDialog(scope.row.attr_id)"
                >修改</el-button>
                <el-button
                  type="danger"
                  size="mini"
                  icon="el-icon-delete"
                  @click="removeParamsById(scope.row.attr_id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane
          label="静态属性"
          name="only"
        >
          <el-button
            type="primary"
            :disabled="isBtnDisabled"
            @click="addDialogVisible = true"
          >添加参数</el-button>
          <!-- 静态参数表格 -->
          <el-table
            :data="onlyTableData"
            border
          >
            <el-table-column type="expand">
              <template slot-scope="scope">

                <el-tag
                  closable
                  :disable-transitions="false"
                  v-for="(item,index) in scope.row.attr_vals"
                  :key="index"
                  @close="handleClose(index,scope.row)"
                >{{ item}}</el-tag>
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                >+ New Tag</el-button>

              </template>
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column
              prop="attr_name"
              label="属性名称"
            >
            </el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  type="primary"
                  size="mini"
                  icon="el-icon-edit"
                  @click="showEditDialog(scope.row.attr_id)"
                >编辑</el-button>
                <el-button
                  type="danger"
                  size="mini"
                  icon="el-icon-delete"
                  @click="removeParamsById(scope.row.attr_id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>

      </el-tabs>
    </el-card>
    <!-- 添加对话框区域 -->
    <el-dialog
      :title="'添加' + titleText"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <el-form
        :model="addParamsForm"
        :rules="paramsFormrules"
        ref="paramsFormRef"
      >
        <el-form-item
          :label="titleText"
          prop="attr_name"
          label-with="100px"
        >
          <el-input v-model="addParamsForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="addParams"
        >确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改参数对话框 -->
    <el-dialog
      :title="'修改' + titleText"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form
        :model="editParamsForm"
        :rules="editFormrules"
        ref="editFormRef"
      >
        <el-form-item
          :label="titleText"
          prop="attr_name"
          label-with="100px"
        >
          <el-input v-model="editParamsForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="editParams"
        >确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  data() {
    return {
      // 商品分类列表
      catelist: [],
      // 选中父级分类id的数组
      selectedcateKeys: [],
      // 指定联级选择器的配置对象
      cateProps: {
        value: "cat_id",
        label: "cat_name",
        children: "children"
      },
      // 动态参数列表
      CateGories: [],
      // 被激活的页签名称
      activeName: "many",
      // 动态参数的数据
      manyTableData: [],
      // 静态参数的数据
      onlyTableData: [],
      // 控制对话框的显示与隐藏
      addDialogVisible: false,
      // 动态属性数组
      arry: [],
      // 添加分类表达数据
      addParamsForm: {
        cat_name: ""
      },
      // 添加分类验证规则对象
      paramsFormrules: {
        attr_name: [
          { required: true, message: "请输入分类名", tirgger: "blur" },
          {
            min: 2,
            max: 10,
            message: "分类名的长度在2到10个字符之间",
            tirgger: "blur"
          }
        ]
      },
      // 控制修改对话框的显示与隐藏
      editDialogVisible: false,
      // 修改的表单数据对象
      editParamsForm: {},
      // 修改表单的验证规则对象
      editFormrules: {
        attr_name: [
          { required: true, message: "请输入分类名", tirgger: "blur" },
          {
            min: 3,
            max: 10,
            message: "分类名的长度在3到10个字符之间",
            tirgger: "blur"
          }
        ]
      }
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get("categories")
      if (res.meta.status !== 200) {
        return this.$Message.error("获取商品列表失败")
      }
      this.catelist = res.data
      console.log(this.catelist)
    },
    // 级联选择框选中项变化，会触发这个函数
    handleChange() {
      console.log(this.selectedcateKeys)
      this.getParamsData()
    },

    // tab 页签点击事件的处理函数
    handleTabClick() {
      console.log(this.activeName)
      this.getParamsData()
    },
    // 获取参数的列表数据
    async getParamsData() {
      if (this.selectedcateKeys.length !== 3) {
        this.selectedcateKeys = []
        this.manyTableData = []
        this.onlyTableData = []
      }

      // 如果等于3直接发起参数请求
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        { params: { sel: this.activeName } }
      )
      if (res.meta.status !== 200) {
        console.log(this.activeName)
        return this.$Message.error("获取参数列表失败")
      }
      res.data.forEach(item => {
        item.attr_vals =
          item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ")
        console.log(item.attr_vals)
        // 控制输入框的显示与隐藏
        item.inputVisible = false
        // 文本框输入的值
        item.inputValue = " "
      })
      // console.log(res.data)
      if (this.activeName === "many") {
        this.manyTableData = res.data
      } else {
        this.onlyTableData = res.data
        console.log(this.onlyTableData)
      }
    },
    // 点击按钮添加参数
    addParams() {
      // 添加之前先做表单预验证
      this.$refs.paramsFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post(
          `categories/${this.cateId}/attributes`,
          {
            attr_name: this.addParamsForm.attr_name,
            attr_sel: this.activeName
          }
        )
        if (res.meta.status !== 201) {
          return this.$Message.error("添加失败")
        }
        this.$Message.success("添加成功")
        this.addDialogVisible = false
        this.getParamsData()
        console.log(this.arry + "打印这个")
      })
    },
    // 添加对话框重置功能
    addDialogClosed() {
      this.$refs.paramsFormRef.resetFields()
    },
    // 点击按钮展示修改的对话框
    async showEditDialog(attr_id) {
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes/${attr_id}`,
        { params: { attr_sel: this.activeName } }
      )
      if (res.meta.status !== 200) {
        return this.$Message.error("查询参数失败")
      }
      this.editParamsForm = res.data
      this.editDialogVisible = true
    },
    // 重置修改的表单
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    //点击按钮修改
    editParams() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put(
          `categories/${this.cateId}/attributes/${this.editParamsForm.attr_id}`,
          {
            attr_name: this.editParamsForm.attr_name,
            attr_sel: this.activeName
          }
        )
        if (res.meta.status !== 200) {
          return this.$Message.error("修改参数失败")
        }
        this.getParamsData()
        this.editDialogVisible = false
      })
    },
    // 根据id删除对应参数
    async removeParamsById(attr_id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).catch(err => err)
      // 如果用户确认删除则返回值为字符串 confirm
      // 如果用户取消删除这返回值为字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== "confirm") {
        return this.$Message.info("已经取消删除")
      }
      console.log("确认删除")
      const { data: res } = await this.$http.delete(
        `categories/${this.cateId}/attributes/${attr_id}`
      )
      if (res.meta.status !== 200) {
        return this.$Message.error("删除参数失败")
      }
      this.getParamsData()
    },
    //
    showInput(row) {
      row.inputVisible = true
      this.$nextTick(_ => {
        this.$refs.saveTagInput.$refs.input.focus()
      })
    },
    handleInputConfirm(row) {
      if (row.inputValue.trim().length === 0) {
        row.inputValue = ""
        row.inputVisible = false
        return
      }
      // 如果没有trturn，则输入的内容需要做后续处理
      row.attr_vals.push(row.inputValue.trim())
      row.inputValue = ""
      row.inputVisible = false

      this.saveAttrVals(row)
    },
    // 删除对应的参数选项
    handleClose(index, row) {
      row.attr_vals.splice(index, 1)
      this.saveAttrVals(row)
    },
    // 将对attr_vals 的操作保存到数据库
    async saveAttrVals(row) {
      const { data: res } = await this.$http.put(
        `categories/${this.cateId}/attributes/${row.attr_id}`,
        {
          attr_name: row.attr_name,
          attr_sel: this.activeName,
          attr_vals: row.attr_vals.join(" ")
        }
      )
      if (res.meta.status !== 200) {
        return this.$Message.error("修改失败")
      }
      this.$Message.success("修改成功")
    }
  },
  computed: {
    // 当前选中的3级分类的id
    cateId() {
      if (this.selectedcateKeys.length === 3) {
        return this.selectedcateKeys[2]
      }
      return null
    },
    // 返回结果为true就禁用添加参数按钮 false就启用
    isBtnDisabled() {
      if (this.selectedcateKeys.length === 3) {
        return false
      }
      return true
    },
    // 动态计算标题文本
    titleText() {
      if (this.activeName === "many") {
        return "动态参数"
      } else {
        return "静态属性"
      }
    }
  }
}
</script>

<style lang="less" scoped>
.cat_opt {
  margin: 15px 0;
}
.input-new-tag {
  width: 120px;
}
.el-tag {
  margin: 15px;
}
</style>
